Screen-frame.



Patented Feb. 19, 1918.

2 SHEETS-SHEET l.

wuewl oz flE/YMM BuJAcK.

H. C. BUJACK.

SCREEN FRAME.

APPLICAIVION man APR. 16. m1.

Patented Feb. 19,1918.

2 SHEETS-SHEET 2.

flERMAN C .Bl/JACK.

SCREEN-FRAME.

Specification of Letters Patent.

f HERMAN o. BUJACK, or GARY, INDIANA.

Patented Feb. 19, 1918.

Application filed April 16, 1917. Serial No. 162,251.

To all whom it may concern:

Be it known that I, Herman C. BUJAGK, a citizen of United States; residing at Gary, county of Lake, State of Indiana, have invented. a certain new and useful Iniprovementin Screen-Frames. and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference :being had to the accompanying drawings. which form a part of this specification.

This invention relates to metal screen frames and has for'its objecta screen frame made simply of strips of metal provided with interlocking joints.

A further feature of the invention is an arrangement whereby the frame is adjustable either lengthwise or widthwise, or both,

by means of the devices hereinafter to be described.

In the drawings,--

Figure l is a perspective of the metal window screen. sash.

Fig. 2 is a vertical section of the same on the line BB of Fig. 1.

Fig.3 is a fragment of the sash strip ends showing them indisassembled relation.

Fig. 4 is a similar view showing them as sembled.

Fig; 5 is a section of the interlocking Strips showing the joint.

Fig. 6 is a perspectiveof the screendoor frame. i

Fig. 7 is a cross section on the line CC of Fig. 6.

Fig. 8 is a sectional detail of a corner of the door.

Fig. 9 is a cross section of the vertical sash bar showing how the hinges are .attached.

Fig. 10 is a cross section of the outside vertical sash bar indicating in detail how the ad ustment of width is secured.

The window screen sash is made up of four strips of metal forming a rectangular frame (Fig. 1) and the mid-strip a. may be utilized to reinforce the frame at the center. This mid-strip comprises a strip of metal of near cylindrical cross section to give strength and having its ends flattened and turned into slots 7) of the side strips of the sash to fas- 1 ton this mid-strip in place. It is to be noted that the sash strips are turned or folded over in a half roll on the inside (Fig. 2) so as to form a hook-like rim over which the wire mesh (Z may be bent. The mesh being of still wire, remains in this shape and this forms a very simple way of attaching a screen to the sash strips.

One of the peculiar features of my invention is the use at corners of a very simple joint, for instance, in Fig. 1 it will be noted that the joint is made a lap joint with the ends of the vertical strips lapping to the outside of the ends of. the horizontal strips. In Figs. 3, 4 and 5 the details of the joint are brought out. It is'to be noted that each sash strip end is provided with a struck-out tongue e and a'pair of slots 7. The slots at one strip end are intended to register with the tongue of the other strip end when the lap is formed. The erect tongue 0 as shown in Fig. 3 can be passed through one of the slots and bent down as shown in Figs. 4 and 5. The two slots leave an intervening strip 1 which is more flexible than the ordinary stock.

InFigs. 6, 7, 8, 9 and 10 the adjustable feature is shown applied to-a screen door, but would also, of course, be applicable to window screens, if desired. The same half roll on the inside of the sash bars is used for retaining the mesh. The thin metal then continues around a stiff channel bar 71, and is doubled back behind the half roll to make a complete sash bar as is well indicated in Fig. 7. Now, on'two sides of the frame the channel bar may abut up against the outside of the hollow sheet metal sash bar. 011 the other two sides the channel bar is located somewhat in from the outside of the hollow metal sash bar as is well indicated at the right of Fig. 7 A strip of heavy gage -metal, preferably shallow V-shape in cross section, designated 2', is used directly on the inside of the hollow metal sash bar. Threaded bolts j pass through the thin metal sash 5n, the reinforcing strip 5 and the channel strip h. Obviously, by tightening these up more or less the reinforcing bar i and the exterior sheathing can be brought more or less near the channel bar, thereby reducing the dimensions of the frame.

From the above description, it is obvious that by having this adjustable arrangement on two sides of the screen that the frame may be made slightly larger than is expected to be used and may be very accurately adjusted to the door or window frame by Slmply turning down the bolts or screws 7. The sash strip constructed inthe way above de- 'scfibed makes possil'ole this adjustment for 7 Y the reasonth'at theparts are merely turned overv against each'othen-not igidly fastened in place. r What I Claimis:

thinmeta-l folded ever upon itself, to form 21- hollow. baror sheathing; a reinforcing bar.

within the same neai? theoutetWall of the flsheathing' a nd a supporting. frame located farther 111 13116 sheathing, and devices for causing said hollowbarsorsheethingi'to c911 tract by drewingthe reinfbrcing bill: injto Ward the saldlsupportingjframe;- 15

5 2. I114; screen framedthe flbpie of this patent may be obtained for I v V combination ofa strip ofthin metal folded upon itself t0 forni a hollow b a-r er sheathing, sa -supporting "frame channel shape in cross section, and a reinforcing'bar v the saidrframe andthere Wi e s I i inforcin'g bar theing contained Within 1 the i fQ1ded thin metalcstrip and'th readed" bolts 7;

Jpassingthrough the same for adjusting the Width oftheehollow 10211 01'- sheathing. 7 e 3 In a sereeIi fiame; the "combination of a hollow bar in-the fermbf thin fnetal folded V r h upon itself, a-"supportingi frame Within the V V 7' 1.- In a screen frame, abar inthe {01 111 of same and spaced from the -thin metal Which forms the outside edges" f the door, and

threaded bolts fer changing the'rel ative pO- 1 1 sition' of, the. thin metal thatfforms the out side edgeofthe, doelyendthe supporting-1 frame,{ said' b'o'1ts' having "heads protruding through the 'metal that forms the outside edges of -the doorso'that the bolts may be turned by their headsxY' V f I testimony whereof, Iis'ignlthisspecification f r i.

fiERMAN c. :BUJACKQ,

7 JAMES S."BR OWN;"

ALFRED JONES. V v

fiiecents each, byeddi'essing the qeinmis sio n eriof .Pla tents ,washin' gmnpe" j/ d 

